Made to fit the 2009-2016 BMW Z4 (E89), the Front Lower Radius Arm Bushing from Whiteline. It goes on the front of the vehicle. Application note: Adds +/- 0.5 degrees Caster. Order it as part number KCA430. Included: 2 bushings and 2 tubes.
This kit does more than replace rubber. Its offset design moves the pivot point of the lower control arm to add positive caster and change how the front end resists dive under braking, which improves straight-line stability and turn-in feel.
Installation is rated moderate, with about 3 hours of work listed. Get the car aligned once it is back on the ground. Other Whiteline parts we list for the BMW Z4: Adjustable Front Sway Bar Link, Rear Sway Bar Link, and Rear Trailing Arm Lower Front Bushing.
Features
Specifications
| Part Number | KCA430 |
| Part Name | Radius Arm Bushing |
| Vehicle | 2009-2016 BMW Z4 |
| Chassis Code | E89 |
| Bushing 1 Inner Diameter | 12.2 mm |
| Bushing 1 Outer Diameter | 70.7 mm |
| Bushing Quantity | 2 Bushings |
| Grade Type | Performance |
| Inside Diameter | 12.2 mm |
| Installation Difficulty | Moderate |
| Installation Time (hrs) | 3 |
| Kit Contents | 2 Bushings, 2 Tubes |
| Material | Polyurethane |
| Mounting Hardware Included | No |
| Outside Diameter | 70.7 mm |
| Vehicle Placement | Front |
| Wheel Alignment Required | Yes |
| Notes | Adds +/- 0.5 Deg Caster |


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